11-24-2015 REMOVED FROM SERVICE OR OTHERWISE UNAVAILABLE. PLEASE USE THE CONTACT FORM AT BLACK BOOK ONLINE TO LET US KNOW IF YOU KNOW OF AN UPDATE. Enter a username in the Pick a User Name field, then click the Check button to see if it is in use or not. No personal information is returned; it's simply to learn if a particular email address is available or not.

Google receives over 1.2 million copyright violation requests per month. The requests are now online in near realtime. Browse by target domain, copyright owner, reporting party or complaint. Oddly, there's no search tool to query the data. However, Google has made the raw data available and this will no doubt go up online somewhere soon. We'll provide a link when this becomes available.

This free online tool attempts to validate whether or an email address is valid or not. Our control testing found it to be generally reliable. However, depending on the settings of the target mail server, the response may indicate whether or not the domain mail server is valid, not the individual email address. We found this to be the case with a non-existent yahoo email address where a false positive was received.

Search this proprietary database of domains known to provide free email service. Free email service is often used by spammers and scamsters and this search can help to identify the less obvious ones. Interesting search.

Directory of Service Provider Agents for Notification of Claims of Infringement. This extensive list extends far beyond ISPs and contains contact information for many websites that might differ from traditional "whois" data. This search is recommended for any indepth investigation of online businesses.

9-7-2016 REMOVED FROM SERVICE OR OTHERWISE UNAVAILABLE. PLEASE USE THE CONTACT FORM AT BLACK BOOK ONLINE TO LET US KNOW IF YOU KNOW OF AN UPDATE. Search over three million crowd sourced business contacts. Covers mostly white collar workers, executives and entrepeneurs. Includes search by name, business name, email address. Registration required to see full results but no registration required to see results list.

Billed as a "engine for links," Open Site Explorer shows exactly who links to any given website. Just enter the website URL, then view reports on the site's links. There's a cap of three free reports per day.

This free email reverse search hits several websites at once. Includes Facebook, Google, My Space, more. This is not intended to be the end all for email investigation -- just a smart, free first step. IE Users: Results pop up in new browser windows -- you will need to allow pop ups for our site.

View actual screenshots of website home pages as they appeared over time. Unlike the Wayback Machine aka Internet Archives, this is not a sometimes failed reconstruction of the page in html but in fact is an actual image of the page exactly as it existed. The site tracks millions of websites but there is no guarantee it will have any specific one. This could be useful on certain cyber investigations including when a shady operator has taken a site offline.

Find Tweets by location, not by person or subject. Enter location information (Example, Miami, FL) or select on map. This could possibly be used to locate witnesses to accidents or other events if tweets went out. UPDATE: This site appears to no longer be working. Try onemilliontweetmap.com

There's many whois lookups on the web to find out who the registrant for any given website is. There's far fewer that allow the user to input an email address to see if it was used for any domain registrations. In our testing, Whois Mind did not catch all websites registered with a test email address, but it did catch some.

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TERMS AND CONDITIONS: Your use of Black Book Online indicates your acceptance of the following terms and conditions: Use of this website is at your own risk. We make no guarantees, expressed or implied, as to the accuracy of this data or service. Errors, including false "no hits," may exist in results returned. Search descriptions, search content, and data through-dates may be mislabeled or otherwise inaccurate, incorrect or missing. This website does not include all existing public record searches. Black Book Online is not a credit reporting agency as defined by the Fair Credit Reporting Act (FCRA) and our search results are not consumer reports as defined by the FCRA. Information appearing on this site may not be used for any FCRA regulated purpose including determining a consumer's eligibility for credit, insurance, employment or housing or for any other purpose covered by the FCRA. You agree to hold Crime Time Publishing Co., Inc., owner of Black Book Online, harmless against all claims arising from your use of the site and to indemnify us against all claims and legal costs arising out of your use of it. Our privacy policy may be viewed here. Content on this website may not be copied, duplicated, re-distributed or sold access to without the prior written approval of Crime Time Publishing Co., Inc.

TERMS AND CONDITIONS: Your use of Black Book Online indicates your acceptance of our terms and conditions. See them here

Use of this website is at your own risk. We make no guarantees, expressed or implied, as to the accuracy of this data or service. Errors, including false "no hits," may exist in results returned. Search descriptions, search content, and data through-dates may be mislabeled or otherwise inaccurate, incorrect or missing. This website does not include all existing public record searches. Black Book Online is not a credit reporting agency as defined by the Fair Credit Reporting Act (FCRA) and our search results are not consumer reports as defined by the FCRA. Information appearing on this site may not be used for any FCRA regulated purpose including determining a consumer's eligibility for credit, insurance, employment or housing or for any other purpose covered by the FCRA. You agree to hold Crime Time Publishing Co., Inc., owner of Black Book Online, harmless against all claims arising from your use of the site and to indemnify us against all claims and legal costs arising out of your use of it. Our privacy policy may be viewed here. Content on this website may not be copied, duplicated, re-distributed or sold access to without the prior written approval of Crime Time Publishing Co., Inc.